Recycled concrete crushing and mixing device

Abstract

The utility model discloses a recycled concrete crushing stirring device relates to the field of recycled concrete utilization, including stirring jar and controller, the upper portion of stirring jar is equipped with the grinding cover, and grinding cover is connected with stirring jar through four even distribution's stand, the lower portion of grinding cover is equipped with motor casing. Through the different round table shape inclination of grinding surface and grinding base plate, under the action of gravity and centrifugal force, the larger concrete block will move to be extruded and be crushed around, when the diameter of concrete block is less than the clearance of grinding surface and grinding base plate edge, under the action of gravity, naturally falls into the cement paste of stirring, forms the new concrete, through the integrated design, makes the abandoned concrete block to complete the continuous operation of crushing, stirring in the same equipment, significantly improves the overall processing efficiency of recycled concrete, need not additional configuration conveying equipment, improves the recycled concrete quality stability and reduces material loss and secondary pollution simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of recycled concrete utilization technology, specifically to a recycled concrete crushing and mixing device. Background Technology

[0002] With the rapid development of the construction industry, the resource utilization of construction waste has become an important direction for green development. Among them, recycled concrete, as the core product of construction waste recycling, directly affects the secondary application value of recycled aggregates through its processing efficiency and quality. Recycled concrete refers to new concrete made by crushing, cleaning, and grading waste concrete blocks, mixing them with graded aggregates in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregates), and then adding cement, water, etc.

[0003] Currently, the processing of recycled concrete mainly relies on crushing and mixing equipment. The separate processing mode has significant drawbacks: on the one hand, the crushing and mixing processes need to be completed in different equipment, requiring additional conveying devices (such as conveyor belts, elevators, etc.) to transfer materials between the two machines. This not only increases the cost of equipment purchase and floor space, but also reduces processing efficiency due to material residues and secondary pollution during the transfer process. On the other hand, the particle size distribution of the crushed recycled aggregate may change due to storage and transfer processes, leading to a decrease in the accuracy of its proportion with new raw materials, affecting the mechanical properties of the final recycled concrete, and making it impractical. Utility Model Content

[0004] The purpose of this invention is to provide a recycled concrete crushing and mixing device to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The recycled concrete crushing and mixing device provided by this utility model includes a mixing tank and a controller. A grinding cover is provided above the mixing tank, and the grinding cover is connected to the mixing tank through four evenly distributed columns. A motor housing is provided below the grinding cover, and a grinding base is rotatably connected above the motor housing. The inner bottom of the grinding cover is provided with a grinding surface adapted to the grinding base. A mixing blade is rotatably connected inside the mixing tank. Each of the four columns is provided with an adjustment component for driving the motor housing to move up and down. A feeding port is provided through the middle of the grinding cover.

[0006] Preferably, the bottom of the grinding cover is fixedly connected to an extension ring, and the two ends of the four columns are fixedly connected to the extension ring and the mixing tank, respectively.

[0007] Preferably, both the grinding surface and the upper surface of the grinding base are designed to fit each other in a frustum shape, and the inclination angle of the grinding surface is greater than the inclination angle of the upper surface of the grinding base. Several protruding tooth blocks are fixedly connected to the opposite surfaces of the grinding surface and the grinding base.

[0008] Preferably, a dual-axis motor is fixedly installed inside the motor housing. The upper output shaft of the dual-axis motor is connected to the middle of the grinding chassis, and the lower output shaft of the dual-axis motor is fixedly connected to an extension shaft. The stirring blades are located below the extension shaft. The input end of the dual-axis motor is electrically connected to the output end of the controller.

[0009] Preferably, the upper surface of the motor housing is rotatably connected to four equally distributed support rollers, and the axes of the four support rollers are all distributed radially along the motor housing, and the bottom surface of the grinding chassis abuts against the four support rollers simultaneously.

[0010] Preferably, a limiting ring is fitted on the outer side of the motor housing, and the limiting ring is fixedly connected to the extension ring through four equally spaced connecting arms.

[0011] Preferably, the stirring blade includes a bottom horizontal plate fixedly connected to the lower end of the extension shaft. Both ends of the bottom horizontal plate are fixedly connected to arc-shaped inclined plates. The two arc-shaped inclined plates are symmetrical about the center of the bottom horizontal plate, and both ends of the two arc-shaped inclined plates are connected to the bottom horizontal plate through support rods.

[0012] Preferably, the adjustment assembly includes a support arm fixedly connected to the bottom surface of the motor housing, a sliding sleeve fixedly connected to the end of the support arm, and the sliding sleeve slidably connected to the column, and the column is provided with a lifting structure for driving the sliding sleeve to move up and down.

[0013] Preferably, the lifting structure includes a motor fixedly mounted on a column, a threaded rod fixedly connected to the output shaft of the motor, a threaded sleeve fixedly connected to the sliding sleeve and threadedly connected to the threaded rod, and the input end of the motor is electrically connected to the output end of the controller.

[0014] Preferably, the bottom of the mixing tank is fixedly connected to four equally distributed support legs, the discharge port at the bottom of the mixing tank is rotatably connected to an end cover, and the bottom of the mixing tank is rotatably connected to a rotary switch that abuts against the end cover.

[0015] The beneficial effects are: Due to the different inclination angles of the grinding surface and the grinding base, larger concrete blocks will move outwards and be crushed under the action of gravity and centrifugal force. When the diameter of the concrete block is smaller than the gap between the grinding surface and the edge of the grinding base, it will fall naturally into the stirred cement slurry under the action of gravity, forming new concrete. Through integrated design, waste concrete blocks can complete the continuous operation of crushing and mixing in the same equipment, which significantly improves the overall processing efficiency of recycled concrete, eliminates the need for additional conveying equipment, improves the quality stability of recycled concrete, and reduces material loss and secondary pollution.

[0016] The controller controls four motors to rotate simultaneously. The screw rods and screw sleeves are connected to each other, which drives the sliding sleeves to move upward on the column. At this time, the support arm drives the motor housing and grinding chassis to rise together. The distance between the grinding chassis and the grinding surface can be adjusted to adjust the size of the crushed concrete blocks. The same equipment can quickly switch to produce recycled aggregates of different particle sizes, which is suitable for multiple applications such as roadbeds, walls, and precast components, and improves the comprehensive utilization rate of recycled concrete. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a bottom-view perspective view of this utility model; Figure 3 This is a cross-sectional perspective view of the grinding cover of this utility model; Figure 4 This is a cross-sectional front view of the grinding cover of this utility model; Figure 5 This is a split perspective view of the grinding chassis of this utility model; Figure 6 This is a three-dimensional view of the arc-shaped inclined plate of this utility model.

[0019] The annotations in the attached figures are explained as follows: 1. Mixing tank; 2. Support legs; 3. Grinding hood; 4. Adjustment assembly; 401. Motor; 402. Threaded rod; 403. Threaded sleeve; 404. Sliding sleeve; 405. Support arm; 5. Motor housing; 6. Grinding base; 7. Feed port; 8. Grinding surface; 9. Extension ring; 10. Extension shaft; 11. Arc-shaped inclined plate; 12. Bottom horizontal plate; 13. Dual-shaft motor; 14. Support roller; 15. Limiting ring; 16. End cover; 17. Rotary switch; 18. Controller; 19. Column. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] See Figures 1-6 As shown, this utility model provides a recycled concrete crushing and mixing device, including a mixing tank 1 and a controller 18. A grinding cover 3 is provided above the mixing tank 1, and the grinding cover 3 is connected to the mixing tank 1 through four evenly distributed columns 19. A motor housing 5 is provided below the grinding cover 3, and a grinding base 6 is rotatably connected above the motor housing 5. The inner bottom of the grinding cover 3 is provided with a grinding surface 8 adapted to the grinding base 6. A mixing blade is rotatably connected inside the mixing tank 1. Each of the four columns 19 is provided with an adjustment component 4 for driving the motor housing 5 to move up and down. A feeding port 7 is provided through the middle of the grinding cover 3. To determine the size of the concrete block after the grinding base 6 is adjusted, the specific data after adjustment can be obtained by randomly sampling and measuring from the fallen soil blocks.

[0022] Reference Figure 4As shown, an extension ring 9 is fixedly connected to the bottom of the grinding shroud 3, and the two ends of the four columns 19 are fixedly connected to the extension ring 9 and the mixing tank 1, respectively. The grinding surface 8 and the upper surface of the grinding base 6 are both mutually compatible frustum-shaped designs, and the inclination angle of the grinding surface 8 is greater than the inclination angle of the upper surface of the grinding base 6. Several protruding teeth are fixedly connected to the opposite surfaces of the grinding surface 8 and the grinding base 6. The extension ring 9 can prevent the concrete block from being flung away by centrifugal force when it falls downward. After impacting the extension ring 9, the concrete block can fall vertically into the mixing tank 1 below for mixing. The different angles of the design allow larger concrete blocks to be gradually crushed into smaller lumps from areas with larger gaps, making the crushing process more stable. The convex teeth provide a good crushing effect when rotating. When concrete blocks are fed into the grinding hood 3 through the feeding port 7, the larger concrete blocks will move to all sides under the action of gravity and centrifugal force due to the different frustum-shaped inclination angles between the grinding surface 8 and the grinding base 6. At the same time, they will be crushed when they come into contact with the convex teeth. When the diameter of the concrete block is smaller than the gap between the grinding surface 8 and the edge of the grinding base 6, it will fall naturally into the stirred cement slurry under the action of gravity.

[0023] Reference Figure 5-6 As shown, a dual-shaft motor 13 is fixedly installed inside the motor housing 5. The upper output shaft of the dual-shaft motor 13 is connected to the middle of the grinding chassis 6, and the lower output shaft of the dual-shaft motor 13 is fixedly connected to an extension shaft 10. The stirring blades are located below the extension shaft 10. The input end of the dual-shaft motor 13 is electrically connected to the output end of the controller 18. By controlling the rotation of the dual-shaft motor 13, the grinding chassis 6 and the stirring blades can be driven to rotate together, so as to achieve simultaneous crushing and stirring. At the same time, when the height of the grinding chassis 6 is adjusted, the stirring blades will also move with it, which improves the mixing effect of the new concrete slurry to a certain extent.

[0024] Reference Figure 5 As shown, four equally distributed support rollers 14 are rotatably connected to the upper surface of the motor housing 5, and the axes of the four support rollers 14 are all distributed radially along the motor housing 5. The bottom surface of the grinding base 6 abuts against the four support rollers 14 simultaneously. The support rollers 14 can provide sufficient support force when the grinding base 6 rotates to squeeze the concrete block, and can make it rotate stably.

[0025] Specifically, a limiting ring 15 is fitted on the outer side of the motor housing 5. The limiting ring 15 is fixedly connected to the extension ring 9 through four evenly distributed connecting arms. The limiting ring 15 and the motor housing 5 are fitted together and moved, which further improves the stability of the motor housing 5 when it moves.

[0026] Reference Figure 6As shown, the mixing blade includes a bottom horizontal plate 12 fixedly connected to the lower end of the extension shaft 10. Both ends of the bottom horizontal plate 12 are fixedly connected to arc-shaped inclined plates 11. The two arc-shaped inclined plates 11 are symmetrical about the center of the bottom horizontal plate 12, and both ends of the two arc-shaped inclined plates 11 are connected to the bottom horizontal plate 12 through support rods. The arc-shaped inclined plates 11 with varying heights can achieve a good mixing effect when mixing cement slurry, and the support rods improve the stability of the arc-shaped inclined plates 11.

[0027] Reference Figure 3 As shown, the adjustment assembly 4 includes a support arm 405 fixedly connected to the bottom surface of the motor housing 5. A sliding sleeve 404 is fixedly connected to the end of the support arm 405, and the sliding sleeve 404 is slidably connected to the column 19. The column 19 is provided with a lifting structure for driving the sliding sleeve 404 to move up and down. The lifting structure includes a motor 401 fixedly mounted on the column 19. A threaded rod 402 is fixedly connected to the output shaft of the motor 401. A threaded sleeve 403, threadedly connected to the threaded rod 402, is fixedly connected to the sliding sleeve 404. The input end of the motor 401 is electrically connected to the output end of the controller 18. The controller 18... Four motors 401 are controlled to rotate simultaneously. They are threadedly connected to threaded sleeves 403 via threaded rods 402, which drives the sliding sleeves 404 to move upward on the column 19. At this time, the motor housing 5 and the grinding base 6 are raised together via the support arm 405. The distance between the grinding base 6 and the grinding surface 8 is adjusted, thereby adjusting the size of the crushed concrete blocks. The sliding sleeves 404 and the column 19 are fitted together and move, which further improves the stability of the motor housing 5 during movement. It is worth mentioning that the synchronous rotation of the four motors 401 is existing technology and can be achieved by simple programming by those skilled in the art, so it will not be described in detail here.

[0028] Reference Figure 2 As shown, four evenly distributed support legs 2 are fixedly connected to the bottom of the circumferential surface of the mixing tank 1. An end cover 16 is rotatably connected to the discharge port at the bottom of the mixing tank 1, and a rotary switch 17 that abuts against the end cover 16 is rotatably connected to the bottom of the mixing tank 1. The support legs 2 can make the components more stable and leave enough space below the discharge port for subsequent centralized collection. After mixing is completed, the rotary switch 17 is rotated so that its long handle does not abut against the lower end of the end cover 16. At this time, the end cover 16 can be opened freely. After opening, new concrete is discharged and collected from the lower discharge port. Conversely, the end cover 16 can be fixed to block the lower discharge port.

[0029] In use, cement and water are first added to the mixing tank 1. Then, the controller 18 controls the four motors 401 to rotate simultaneously. The threaded rod 402 is threadedly connected to the threaded sleeve 403, which drives the sliding sleeve 404 to move upward on the column 19. At this time, the support arm 405 drives the motor housing 5 and the grinding base 6 to rise together. The distance between the grinding base 6 and the grinding surface 8 is adjusted, and the dual-shaft motor 13 is controlled to drive the grinding base 6 and the mixing blades to rotate together. Concrete blocks are put into the grinding hood 3 from the feeding port 7 and ground through the grinding surface. Unlike the frustum-shaped inclination of the grinding surface 8 and the grinding base 6, larger concrete blocks will move around under the action of gravity and centrifugal force. At the same time, when they come into contact with the protruding teeth, they will be crushed. When the diameter of the concrete block is smaller than the gap between the grinding surface 8 and the edge of the grinding base 6, it will fall naturally into the stirred cement slurry under the action of gravity to form new concrete. After mixing, rotate the rotary switch 17 so that its long handle does not abut against the lower end of the end cover 16. At this time, the end cover 16 can be opened freely. After opening, the new concrete is discharged and collected from the lower discharge port.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A recycled concrete crushing and mixing device, characterized in that: The system includes a mixing tank (1) and a controller (18). A grinding cover (3) is provided above the mixing tank (1), and the grinding cover (3) is connected to the mixing tank (1) through several columns (19). A motor housing (5) is provided below the grinding cover (3). A grinding base (6) is rotatably connected above the motor housing (5). A grinding surface (8) adapted to the grinding base (6) is provided on the inner bottom of the grinding cover (3). A stirring blade is rotatably connected inside the mixing tank (1). An adjustment component (4) is provided on each of the columns (19) to drive the motor housing (5) to move up and down. A feeding port (7) is provided through the middle of the grinding cover (3).

2. The recycled concrete crushing and mixing device according to claim 1, characterized in that: The bottom of the grinding cover (3) is fixedly connected to an extension ring (9), and the two ends of the column (19) are fixedly connected to the extension ring (9) and the mixing tank (1) respectively.

3. The recycled concrete crushing and mixing device according to claim 1, characterized in that: The grinding surface (8) and the upper surface of the grinding base (6) are both designed as truncated cones that fit each other. The tilt angle of the grinding surface (8) is greater than the tilt angle of the upper surface of the grinding base (6). Several protruding tooth blocks are fixedly connected to the opposite surfaces of the grinding surface (8) and the grinding base (6).

4. The recycled concrete crushing and mixing device according to claim 1, characterized in that: A dual-axis motor (13) is fixedly installed inside the motor housing (5). The upper output shaft of the dual-axis motor (13) is connected to the middle of the grinding chassis (6). The lower output shaft of the dual-axis motor (13) is fixedly connected to an extension shaft (10), and the stirring blade is located below the extension shaft (10). The input end of the dual-axis motor (13) is electrically connected to the output end of the controller (18).

5. The recycled concrete crushing and mixing device according to claim 1, characterized in that: The upper surface of the motor housing (5) is rotatably connected to several support wheels (14), and the axes of the support wheels (14) are all distributed radially along the motor housing (5). The bottom surface of the grinding base (6) abuts against the support wheels (14) simultaneously.

6. The recycled concrete crushing and mixing device according to claim 2, characterized in that: A limiting ring (15) is fitted on the outer side of the motor housing (5), and the limiting ring (15) is fixedly connected to the extension ring (9) through several connecting arms.

7. The recycled concrete crushing and mixing device according to claim 4, characterized in that: The stirring blade includes a bottom horizontal plate (12) fixedly connected to the lower end of the extension shaft (10). Both ends of the bottom horizontal plate (12) are fixedly connected to arc-shaped inclined plates (11). The two arc-shaped inclined plates (11) are symmetrical about the center of the bottom horizontal plate (12), and both ends of the two arc-shaped inclined plates (11) are connected to the bottom horizontal plate (12) through support rods.

8. The recycled concrete crushing and mixing device according to claim 1, characterized in that: The adjustment assembly (4) includes a support arm (405) fixedly connected to the bottom surface of the motor housing (5). The end of the support arm (405) is fixedly connected to a sliding sleeve (404), and the sliding sleeve (404) is slidably connected to the column (19). The column (19) is provided with a lifting structure for driving the sliding sleeve (404) to move up and down.

9. The recycled concrete crushing and mixing device according to claim 8, characterized in that: The lifting structure includes a motor (401) fixedly installed on a column (19). A threaded rod (402) is fixedly connected to the output shaft of the motor (401). A threaded sleeve (403) that is threadedly connected to the threaded rod (402) is fixedly connected to the sliding sleeve (404). The input end of the motor (401) is electrically connected to the output end of the controller (18).

10. The recycled concrete crushing and mixing device according to claim 1, characterized in that: The bottom of the circumferential surface of the mixing tank (1) is fixedly connected with several support legs (2), and an end cover (16) is rotatably connected to the discharge port at the bottom of the mixing tank (1). A rotary switch (17) that abuts against the end cover (16) is rotatably connected to the bottom of the mixing tank (1).

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